Last name รัตนมิตร (รัตนมิตร 
, Pratanmit , Rattsamitatt ) , throughout the world, is a very rare family name. The family name รัตนมิตร is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rattsamitatt, รัตนมิตร, Pratanmit, Pratanmitr | Thailand |